top coal caving mining method



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Analysis of top coal caving and coal caving methods in ,

Analysis of top coal caving and coal caving methods in fully mechanized top coal caving face: Wang Yingjie: Gucheng Mine, Lu'an Mining (Group) Corporation Ltd, Changzhi 046100, China...

Top Coal Caving | Longwall | underground COAL

A brief description of longwall top coal caving (LTCC) is included at the end of the Longwall section of the Fundamentals of Coal Mining module of this web site Despite the fact that there are numerous coal seams in Australia which are thick enough for LTCC to be used to increase recoveries, potentially at a reduced cost/tonne, there has been little application of the process to date...

FILLING MINING METHOD FOR FULLY-MECHANIZED TOP COAL CAVING ,

1 A filling mining method for a fully-mechanized top coal caving working face, comprising the following steps: at step A, dividing the fully-mechanized top coal caving working face into a filling zone and a top coal caving zone along a strike of the working face, wherein lengths of the filling zone and the top coal caving zone are equal to a strike length of the working face, a sum of widths ....

FILLING MINING METHOD FOR FULLY-MECHANIZED TOP COAL CAVING ,

1 A filling mining method for a fully-mechanized top coal caving working face, comprising the following steps: at step A, dividing the fully-mechanized top coal caving working face into a filling zone and a top coal caving zone along a strike of the working face, wherein lengths of the filling zone and the top coal caving zone are equal to a strike length of the working face, a sum of widths ....

Longwall Top Coal Caving (LTCC) Mining Technology

Longwall Top Coal Caving (LTCC) is a special designed longwall mining method for very thick seams (thickness is more than 45m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining height...

Analysis of top coal caving and coal caving methods in ,

Analysis of top coal caving and coal caving methods in fully mechanized top coal caving face: Wang Yingjie: Gucheng Mine, Lu'an Mining (Group) Corporation Ltd, Changzhi 046100, China...

Longwall Top Coal Caving (LTCC) Mining Technology

Longwall Top Coal Caving (LTCC) is a special designed longwall mining method for very thick seams (thickness is more than 45m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining height...

3D numerical modeling of longwall mining with top-coal caving

Production of thick seams by using top-coal tional single-slice coal mining in many aspects caving is much simpler in comparison to slice mining and requires less development; consequently, the effi- u0003Corresponding author Tel: +90 312 2977 600; fax: +90 312 2992 ciency of production is significantly higher...

Mining Safety of Longwall Top-coal Caving in China

53 Mining Safety of Longwall Top-coal Caving in China Jian Wu, 1 Yueping Qin, 1 and Minghua Zhai1 1China Univ of Mining and Technology, 011# Xueyuan Road, Haidian Dist, Beijing 100083, PR of China; 2Zhangji Coal Mine, Xuzhou Mining Bureau, Xuzhou 221147, Jiangsu Province, PR of China ABSTRACT Longwall top-coal caving technology has developed rapidly in China, in recent years...

top coal caving mining method

Top Coal Movement Law of Dynamic Group Caving Method in 2020-7-7 With different top coal caving intervals, top coal caving sequences, caving methods, and dip angles, Sun et al carried out 15 experiments, proposing that the combination mode of the single-opening sequence caving method (SSCM) from lower to upper in layout direction and one mining and one caving in the advance ,...

Longwall Top Coal Caving | Introduction | underground COAL

Longwall Top Coal Caving Longwall top coal caving (LTCC) is a special type of longwall mining applicable to very thick seams (greater than 45m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining ,...

Study on the Characteristics of Top-Coal Caving and ,

03-08-2020· Under the current mining conditions, the top-coal caving height was 398m, which was much lower than the residual high sectional coal pillar height (71m); the top coal cannot collapse completely Based on the characteristics of the top-...

Numerical simulation of realistic top coal caving ,

24-06-2021· Top coal caving mining technology started in the 1980s and continues to this day 1,2Longwall top coal caving (LTCC) mining consists of two processes: shearer cutting in front of a ,...

A Brief Comparison of Longwall Methods Used at Mining of ,

In comparison with top coal caving method, the slicing method is of lower output, higher production cost and less safety (Xu, 2001) From the economic point of view, investment costs for the panel in MSL are twice higher than at the LTCC method (Köse et al, 1989) 23 The Longwall Top Coal Caving Method...

Types of Underground Mining Method Comparison

16-03-2017· Caving Methods of Mining There are three distinctive methods of working large deposits that involve, in some way, the factor of caving Slightly different names are in use, but those that are simple as well as descriptive are top slicing, sublevel caving, and block caving...

THERMAL INFRARED CHARACTERISTICS OF ROCK STRATA FRACTURE ,

The horizontal section top coal caving mining method was adopted in the mining technology and the mining ratio was 1:4~1:73 However, in the process of the mining, the rules of the rock strata movement were complicated, and the problem of large suspension of the rock strata often occurred...

Top Coal Caving | Longwall | underground COAL

A brief description of longwall top coal caving (LTCC) is included at the end of the Longwall section of the Fundamentals of Coal Mining module of this web site Despite the fact that there are numerous coal seams in Australia which are thick enough for ,...

top coal caving mining method - butterfly-babymassagenl

top coal caving mining method Underground coal production at gle turkey was originally won from conventional longwall mining drill and blast and more recently from the innovative use of the mechanised longwall top coal caving method this latter method was introduced to gain maximum tonnage from the extraction of an m lignite coal seam under very difficult mining...

Caving mechanisms of loose top-coal in longwall top-coal ,

Longwall Top Coal Caving Method - SlideShare...

Application of Longwall Top Coal Caving in Challenging ,

Abstract-Longwall top coal caving (LTCC) techniques has been employed in favourable geological conditions widely in China since the mid-80s and in Australia recently With the improvement of highly-powered face equipment and the method itself, in the past 15 years, LTCC was introduced to more challenging geological...

Mining Safety of Longwall Top-coal Caving in China

53 Mining Safety of Longwall Top-coal Caving in China Jian Wu, 1 Yueping Qin, 1 and Minghua Zhai1 1China Univ of Mining and Technology, 011# Xueyuan Road, Haidian Dist, Beijing 100083, PR of China; 2Zhangji Coal Mine, Xuzhou Mining Bureau, Xuzhou 221147, Jiangsu Province, PR of China ABSTRACT Longwall top-coal caving technology has developed rapidly in China, in recent years...

Types of Underground Mining Method Comparison

16-03-2017· Caving Methods of Mining There are three distinctive methods of working large deposits that involve, in some way, the factor of caving Slightly different names are in use, but those that are simple as well as descriptive are top slicing, sublevel caving, and block caving...

top coal caving mining method

Top Coal Movement Law of Dynamic Group Caving Method in 2020-7-7 With different top coal caving intervals, top coal caving sequences, caving methods, and dip angles, Sun et al carried out 15 experiments, proposing that the combination mode of the single-opening sequence caving method (SSCM) from lower to upper in layout direction and one mining and one caving in the advance ,...

Recognition of rock–coal interface in top coal caving ,

This paper provides a novel rock-coal interface recognition method based on stacked sparse autoencoders (SSAE) Given their different size and hardness, coal and rock generate different tail beam vibrations Therefore, the rock-coal interface in top coal caving can be identified using an acceleration sensor to measure such vibrations The end of the hydraulic support beam is an ideal location ....

Caving mechanisms of loose top-coal in longwall top-coal ,

01-10-2014· The top-coal caving longwall mining is one of the major mining methods for extracting thick coal seams in China The top-coal caving mining was estimated to have produced about 06 billion metric tons every year, accounts for 18% of underground coal mining in China The major features of the top-coal caving mining are that a conventional longwall mining with cutting height 2–3 m is ,...

A Brief Comparison of Longwall Methods Used at Mining of ,

In comparison with top coal caving method, the slicing method is of lower output, higher production cost and less safety (Xu, 2001) From the economic point of view, investment costs for the panel in MSL are twice higher than at the LTCC method (Köse et al, 1989) 23 The Longwall Top Coal Caving Method...

Geotechnical Considerations for Longwall Top Coal Caving ,

Austar Coal Mine James Anderson Austar Coal Mine Follow this and additional works at: https://rouoweduau/coal Recommended Citation Adrian Moodie and James Anderson, Geotechnical Considerations for Longwall Top Coal Caving at Austar Coal Mine, in Naj Aziz and Bob Kininmonth (eds), Proceedings of the 2011 Coal Operators'...

Types of Underground Mining Method Comparison

16-03-2017· Caving Methods of Mining There are three distinctive methods of working large deposits that involve, in some way, the factor of caving Slightly different names are in use, but those that are simple as well as descriptive are top slicing, sublevel caving, and block caving...

Analysis of top coal caving and coal caving methods in ,

Analysis of top coal caving and coal caving methods in fully mechanized top coal caving face: Wang Yingjie: Gucheng Mine, Lu'an Mining (Group) Corporation Ltd, Changzhi 046100, China...

Longwall Top Caving Coal Mining Technology

Longwall Top Coal Caving (LTCC) Mining Technology Longwall Top Coal Caving (LTCC) is a special designed longwall mining method for very thick seams (thickness is more than 45m) where good quality coal is being left because "conventional" longwall equipment has not yet been designed to operate successfully beyond around 5m mining height...